William O'Leary

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Known For

Credits

Cast Credits

SEAL Team (2017)
Guest starring as Mark Buckman
Bosch (2014)
Guest starring as Vincent Ackles
Rizzoli & Isles (2010)
Guest starring as Mr. Wooster
NCIS: Los Angeles (2009)
Guest starring as Harry Zanetti
Numb3rs (2005)
Guest starring as Roland Haldane
  • Episode 1x01: Pilot (Jan 23, 2005) [Co-Star]
24 (2001)
Guest starring as Sid
The X-Files (1993)
Guest starring as Gas Station Man
Home Improvement (1991)
Guest starring as Marty (31 episodes)
Miami Vice (1984)
Guest starring as Scotty